Mercurial > sdl-ios-xcode
annotate test/loopwave.c @ 1585:980d2a0dc2a3
Date: Tue, 4 Mar 2003 15:05:31 -0800
From: "Jim"
Subject: [SDL] Frame Buffer patches...
Okay I'm new at patch generation - so please tell me if there's a better way
I could have done this.
Attached are two patch files generated with 'cvs diff -u'
SDL-fb-open-lock.patch applies to SDL_fbvideo.c
Modifies the open loop to check /dev/fb/0 found on devfs...
Modifies the lock code to return failure if the current virtual terminal
is not the one opened for frame buffer writing...
Lock would hang forever if switched away (ctrl-alt-F1) ...
SDL-fb-mousedrv-screensave.patch applies to SDL_fbevents.c
Switches default mouse mode based on SDL_MOUSEDRV - currently only
accepts PS2 - otherwise default is MS Mouse.
When the screen is switched - exisiting code (wrapped in ifdef
SAVE_SCREEN_COTENTS) would save the wrong bit of the screen....
( I run frame buffer 1600x1200, the size I requested was 800x600 - the
save would save the top 800 lines (non biased) and restore them... Adding
screen->offset fixed that )
However, if that option is not set, then a call to SDL_UpdateRect (full
screen) is made. (which may have had it's contents changed since the screen
is not entirely locked because of lock-failure patch)
Jim
[patches slightly tweaked for SDL 1.2.10]
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 22 Mar 2006 07:48:22 +0000 |
| parents | 0394f8ebc42d |
| children | 14717b52abc0 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Program to load a wave file and loop playing it using SDL sound */ | |
| 3 | |
| 4 /* loopwaves.c is much more robust in handling WAVE files -- | |
| 5 This is only for simple WAVEs | |
| 6 */ | |
|
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7 #include "SDL_config.h" |
| 0 | 8 |
| 9 #include <stdio.h> | |
| 10 #include <stdlib.h> | |
|
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11 |
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12 #if HAVE_SIGNAL_H |
| 0 | 13 #include <signal.h> |
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14 #endif |
| 0 | 15 |
| 16 #include "SDL.h" | |
| 17 #include "SDL_audio.h" | |
| 18 | |
| 19 struct { | |
| 20 SDL_AudioSpec spec; | |
| 21 Uint8 *sound; /* Pointer to wave data */ | |
| 22 Uint32 soundlen; /* Length of wave data */ | |
| 23 int soundpos; /* Current play position */ | |
| 24 } wave; | |
| 25 | |
|
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Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
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diff
changeset
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26 |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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27 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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28 static void quit(int rc) |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
29 { |
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be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
30 SDL_Quit(); |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
31 exit(rc); |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
32 } |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
33 |
|
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
34 |
| 0 | 35 void fillerup(void *unused, Uint8 *stream, int len) |
| 36 { | |
| 37 Uint8 *waveptr; | |
| 38 int waveleft; | |
| 39 | |
| 40 /* Set up the pointers */ | |
| 41 waveptr = wave.sound + wave.soundpos; | |
| 42 waveleft = wave.soundlen - wave.soundpos; | |
| 43 | |
| 44 /* Go! */ | |
| 45 while ( waveleft <= len ) { | |
| 46 SDL_MixAudio(stream, waveptr, waveleft, SDL_MIX_MAXVOLUME); | |
| 47 stream += waveleft; | |
| 48 len -= waveleft; | |
| 49 waveptr = wave.sound; | |
| 50 waveleft = wave.soundlen; | |
| 51 wave.soundpos = 0; | |
| 52 } | |
| 53 SDL_MixAudio(stream, waveptr, len, SDL_MIX_MAXVOLUME); | |
| 54 wave.soundpos += len; | |
| 55 } | |
| 56 | |
| 57 static int done = 0; | |
| 58 void poked(int sig) | |
| 59 { | |
| 60 done = 1; | |
| 61 } | |
| 62 | |
| 63 int main(int argc, char *argv[]) | |
| 64 { | |
| 65 char name[32]; | |
| 66 | |
| 67 /* Load the SDL library */ | |
| 68 if ( SDL_Init(SDL_INIT_AUDIO) < 0 ) { | |
| 69 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); | |
|
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Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
70 return(1); |
| 0 | 71 } |
| 72 if ( argv[1] == NULL ) { | |
|
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parents:
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changeset
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73 argv[1] = "sample.wav"; |
| 0 | 74 } |
| 75 /* Load the wave file into memory */ | |
| 76 if ( SDL_LoadWAV(argv[1], | |
| 77 &wave.spec, &wave.sound, &wave.soundlen) == NULL ) { | |
| 78 fprintf(stderr, "Couldn't load %s: %s\n", | |
| 79 argv[1], SDL_GetError()); | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
80 quit(1); |
| 0 | 81 } |
|
1463
0394f8ebc42d
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
1151
diff
changeset
|
82 |
| 0 | 83 wave.spec.callback = fillerup; |
|
1463
0394f8ebc42d
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
1151
diff
changeset
|
84 #if HAVE_SIGNAL_H |
| 0 | 85 /* Set the signals */ |
| 86 #ifdef SIGHUP | |
| 87 signal(SIGHUP, poked); | |
| 88 #endif | |
| 89 signal(SIGINT, poked); | |
| 90 #ifdef SIGQUIT | |
| 91 signal(SIGQUIT, poked); | |
| 92 #endif | |
| 93 signal(SIGTERM, poked); | |
|
1463
0394f8ebc42d
*** empty log message ***
Sam Lantinga <slouken@libsdl.org>
parents:
1151
diff
changeset
|
94 #endif /* HAVE_SIGNAL_H */ |
| 0 | 95 |
| 96 /* Initialize fillerup() variables */ | |
| 97 if ( SDL_OpenAudio(&wave.spec, NULL) < 0 ) { | |
| 98 fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError()); | |
| 99 SDL_FreeWAV(wave.sound); | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
100 quit(2); |
| 0 | 101 } |
| 102 SDL_PauseAudio(0); | |
| 103 | |
| 104 /* Let the audio run */ | |
| 105 printf("Using audio driver: %s\n", SDL_AudioDriverName(name, 32)); | |
| 106 while ( ! done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING) ) | |
| 107 SDL_Delay(1000); | |
| 108 | |
| 109 /* Clean up on signal */ | |
| 110 SDL_CloseAudio(); | |
| 111 SDL_FreeWAV(wave.sound); | |
|
1151
be9c9c8f6d53
Removed atexit() from most of the test programs; atexit(SDL_Quit) isn't safe
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
112 SDL_Quit(); |
| 0 | 113 return(0); |
| 114 } |